New Cisco Meraki Datasources Dropped

It is exactly what @Ajay said.  These are new modules that apply to resources that represent discrete Meraki devices rather than Meraki Networks or Meraki Orgs.  These are a new alternative to what we now refer to as Legacy Cisco Meraki modules.  If you want the new features these modules offer, you can choose to migrate from the Legacy modules to these.  More details are here: